US5647817A - Two directional multi-speed shifting gear of middle axle - Google Patents

Two directional multi-speed shifting gear of middle axle Download PDF

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Publication number
US5647817A
US5647817A US08/548,735 US54873595A US5647817A US 5647817 A US5647817 A US 5647817A US 54873595 A US54873595 A US 54873595A US 5647817 A US5647817 A US 5647817A
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United States
Prior art keywords
pawl
teeth
outer ring
axle
ring
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Expired - Fee Related
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US08/548,735
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English (en)
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Dianlin Chang
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Assigned to LAM, STEVEN SIUWAI reassignment LAM, STEVEN SIUWAI ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHANG, DIANLIN
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
    • B62M11/145—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears built in, or adjacent to, the bottom bracket
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/003—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion the gear-ratio being changed by inversion of torque direction
    • F16H3/005—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion the gear-ratio being changed by inversion of torque direction for gearings using gears having orbital motion

Definitions

  • the invention is concerned with a multi-speed shifting gear, and to specific, a two directional two-speed shifting gear of middle axle all kinds of pedal cycles.
  • the middle axle of a typical pedal cycle such as a bicycle
  • a speed changing function normally a speed changing set should be attached to it, for example, a kind of speed changing set made of two to five pieces of chainwheels with different sizes is montaged on the middle axle of a bicycle.
  • the speed changing of the bicycle may be realized by selectively changing the size of the chainwheel of the driven chain.
  • the rotating direction of the middle axle may be restrained only in one direction.
  • FIG. 1 is the sectional elevation of the speed shifting gear
  • FIG. 2 is a half elevation along the plane 2--2 of the speed shifting gear illustrated in FIG. 1
  • the two directional speed shifting gear of middle axle of the invention wherein the article is made of outer ring, bearing ring, starwheel, freewheel screw cup, freewheel plate, core teeth, pawl and chainwheel etc.
  • the feature of the invention lies in that the inner side of the outer ring 1 has two ball races and inner teeth.
  • the chainwheel B is fixed through thread or thread hole on the ring.
  • the inner pawl 4 and the starwheel 8 are separately fixed on the small hubs 9;
  • two or more pieces of small hubs 9 may be fixed, and on the small hubs 9 one or more pieces of the inner pawls 4 and starwheel are 8 installed.
  • FIG. 1 is the sectional elevation of the speed shifting gear and FIG. 2 is a half elevation along the plane 2-2.
  • 1 represents outer ring; 2 bearing ring; 3 freewheel screw cup; 4 inner pawl; 5 core teeth; 6 freewheel plate; 7 outer pawl; 8 starwheel; 9 small hub; 1O middle axle; and 11 pawl hub, and A crank of middle axel; B chainwheel of driven chain and C bottom bracket case on the cycle frame.
  • the bearing ring 2 and the freewheel screw cup 3 situate at one side
  • the freewheel plate 6 situates at the other side thereby supporting the outer ring 1.
  • the starwheel 8 and the inner pawl 4 are mounted between the inner teeth of the outer ring 1 and the core teeth 5.
  • the crank A is fixed on the middle axle 10, while the freewheel plate 6 is mounted on the crank A.
  • the outer pawl 7 is fixed on the bottom bracket case through pawl hub 11 on it.
  • the chainwheel B is fixed on the outer ring 1 through outer thread or thread hole oil the ring.
  • Tile core teeth 5 drive the outer ring 1 by transmitting rotational forces through the intermediate wheel, e.g. the starwheel 8.
  • the outer ring 1 is locked by the inner pawl 4 so that the outer ring 1 may be allowed to rotate only positive clock wise rather than a counter clock wise, e.g., the outer ring 1 will be rotating also synchronously in the same direction, i.e., clockwise, as the core teeth 5.
  • the outer pawl 7 is moving in the same direction as the pawl teeth of the bearing ring 2, and it dose not restrain the rotation of the bearing ring 2.
  • the outer ring 1 may also enable the chainwheel B mounted on the ring 1 to rotate, then the chainwheel B will drive the chain.
  • the operation of the middle axle of the speed shifting gear is the same as that of the middle axle of a usual pedal cycle.
  • the outer pawl 7 When the middle axle 10 is rotating in the reverse direction, i.e., a counter clockwise direction, the outer pawl 7 will lock the bearing ring 2 so that the bearing ring 2 itself may be allowed to rotate in the positive clock wise but not counter clock wise, therefore, in the same time the starwheel 8 is in a static state.
  • the starwheel 8 now becomes a static intermediate wheel.
  • the core teeth 5 While following the running of the middle axle, the core teeth 5 will be rotating counter clock wise, which through the starwheel 8 will drive the outer ring rotating as the starwheel in the same way.
  • the inner pawl 4 runs in the same direction, the outer ring 1 will smoothly in the positive clock wise direction, which is, of course, opposed to that of the core teeth.
  • the middle axle 10 rotates and drives the chainwheel B, the chain itself moves in the same direction as the outer ring 1. Otherwise when the outer ring 1 is rotating, as the outer diameter of the core teeth 5 is smaller than the inner diameter of the inner hole of the outer ring 1, so the number of the revolution of the outer ring 1 is surely less than that of the core teeth 5, e.g. less than the revolution number of the crank A. This situation is so called the low speed moving.
  • the present new invented two directional speed shifting gear is proven to possess remarkable advantages prior to the conventional existing products of speed shifting gear. Being simpler in construction, more convenient and more safe and realiable in operation while the chainwheel may be running sliding wise related to the crank, in such case the freewheel fixed on the rear wheel may be replaced by a usual chainwheel, so that to cut down the cost of a pedal cycle, however, offering the same function as before.
  • more than two sets of chainwheels can be used therefore the shifting stage of the pedal cycle to be increased efficiently e.g. to insert one chainwheel into the rear freewheel set will result in an increasing of two stage of speed shifting.
  • the installation of such kind of multi-speed shifting gear to a present pedal cycle may surely be realized by means of the conventional technique and tools in today's cycles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)
  • Transmissions By Endless Flexible Members (AREA)
  • Structure Of Transmissions (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
US08/548,735 1994-11-23 1995-10-26 Two directional multi-speed shifting gear of middle axle Expired - Fee Related US5647817A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN94112633.1 1994-11-23
CN94112633A CN1123751A (zh) 1994-11-23 1994-11-23 中轴双向变速器

Publications (1)

Publication Number Publication Date
US5647817A true US5647817A (en) 1997-07-15

Family

ID=5036305

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/548,735 Expired - Fee Related US5647817A (en) 1994-11-23 1995-10-26 Two directional multi-speed shifting gear of middle axle

Country Status (11)

Country Link
US (1) US5647817A (zh)
JP (1) JPH08207871A (zh)
KR (1) KR200246082Y1 (zh)
CN (1) CN1123751A (zh)
BR (1) BR7502640U (zh)
CA (1) CA2162656A1 (zh)
DE (1) DE29517733U1 (zh)
FR (1) FR2727080B1 (zh)
GB (1) GB2295427B (zh)
NL (1) NL1001727C2 (zh)
TW (1) TW305337U (zh)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999046160A1 (en) * 1998-03-11 1999-09-16 Lee Yun Rak Traveling and accelerating system for bicycle
US5954614A (en) * 1998-01-20 1999-09-21 World Industry Co., Ltd. Apparatus for changing power direction for bicycle
US5957802A (en) * 1997-06-09 1999-09-28 World Industry Co., Ltd. Apparatus for changing rotation of pedal shaft for bicycle
US6045475A (en) * 1996-12-30 2000-04-04 World Industry Co., Ltd. Controller for a changeable pedaling system in a bi-directional pedaling bicycle
CN1123706C (zh) * 1999-06-24 2003-10-08 付景满 一种飞轮
KR100421238B1 (ko) * 2002-01-30 2004-03-11 이광섭 일방향기어
WO2008088169A1 (en) * 2007-01-16 2008-07-24 Mbi Co., Ltd. Transmission for motor and controlling device thereof
US20100170731A1 (en) * 2009-01-05 2010-07-08 Sram, Llc Drive System for Driving a Vehicle Wheel
CN104883000A (zh) * 2015-05-25 2015-09-02 严振华 电动自行车用可变减速比的轮毂电机

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3431475B2 (ja) * 1997-12-12 2003-07-28 株式会社シマノ 自転車用フロント変速装置
NL1008984C2 (en) 1998-04-24 1999-10-26 Hoogovens Staal Bv Drive system for bicycle
ES2155020B1 (es) * 1999-04-21 2001-11-16 Valdez Cuauhtemoctzin Castro Bicicleta de doble traccion
KR100361580B1 (ko) * 2000-02-18 2002-11-21 코오롱산업 주식회사 자전거용 전진구동 변환장치
KR20040045646A (ko) * 2002-11-25 2004-06-02 오종수 자전거의 속도변환장치
CN101797951B (zh) * 2010-02-08 2013-01-09 蒋国良 一种链轮装置及电动车

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US523246A (en) * 1894-07-17 Variable-speed gearing for bicycles
FR380113A (fr) * 1907-07-20 1907-11-29 Henri De Ruty Changement de vitesse par rétropédalage, pour bicyclettes et motocyclettes
FR514238A (fr) * 1920-04-22 1921-03-05 Justin Normier Moyeu à changement de vitesse pour bicyclettes
US1998376A (en) * 1933-02-04 1935-04-16 Lundqvist Gunnar Fredrik Motion transmitting means
US2479654A (en) * 1945-09-06 1949-08-23 Robert H Warburton Two-speed transmission for bicycles
GB667655A (en) * 1949-04-21 1952-03-05 Andre Louis Havet Hub for bicycles controlled through reciprocating pedalling and allowing forward and rearward freewheeling
US4583427A (en) * 1984-03-23 1986-04-22 Tamille Pty. Limited Gear box
CN85202575U (zh) * 1985-06-22 1986-04-23 常殿林 双千斤飞轮及采用飞轮变速的自行车
US4955627A (en) * 1989-06-09 1990-09-11 Hartmann Dirck T Five speed chainless drive for heavily loaded pedal powered tricycles
CN1057996A (zh) * 1990-07-10 1992-01-22 常殿林 双向三级变速飞轮

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR502688A (fr) * 1917-09-03 1920-05-22 Louis Veyret Mécanisme de changement de vitesse à rétropédalage applicable aux bicyclettes
GB216106A (en) * 1923-05-17 1924-10-30 Rachlis Dupin & Cie Improvements in change-speed devices for cycles
GB2143599B (en) * 1983-07-11 1986-06-18 Jo Kuei Liu Two-speed gear for a bicycle
KR910000520B1 (ko) * 1988-02-29 1991-01-26 김세웅 자전거의 동력구동장치
GB2263511A (en) * 1992-01-02 1993-07-28 Dianlin Chang A driven free wheel change speed planetary gearing for bicycles
GB2277562B (en) * 1993-04-27 1997-01-29 Tai Her Yang A system of planetary gears

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US523246A (en) * 1894-07-17 Variable-speed gearing for bicycles
FR380113A (fr) * 1907-07-20 1907-11-29 Henri De Ruty Changement de vitesse par rétropédalage, pour bicyclettes et motocyclettes
FR514238A (fr) * 1920-04-22 1921-03-05 Justin Normier Moyeu à changement de vitesse pour bicyclettes
US1998376A (en) * 1933-02-04 1935-04-16 Lundqvist Gunnar Fredrik Motion transmitting means
US2479654A (en) * 1945-09-06 1949-08-23 Robert H Warburton Two-speed transmission for bicycles
GB667655A (en) * 1949-04-21 1952-03-05 Andre Louis Havet Hub for bicycles controlled through reciprocating pedalling and allowing forward and rearward freewheeling
US4583427A (en) * 1984-03-23 1986-04-22 Tamille Pty. Limited Gear box
CN85202575U (zh) * 1985-06-22 1986-04-23 常殿林 双千斤飞轮及采用飞轮变速的自行车
US4955627A (en) * 1989-06-09 1990-09-11 Hartmann Dirck T Five speed chainless drive for heavily loaded pedal powered tricycles
CN1057996A (zh) * 1990-07-10 1992-01-22 常殿林 双向三级变速飞轮
US5141476A (en) * 1990-07-10 1992-08-25 S. W. Lam Two-way-driven 3-speed free wheel

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Cranial Exam", Ron Ige, Mountain Bike Magazine, p. 110 Sep. 1996.
Cranial Exam , Ron Ige, Mountain Bike Magazine, p. 110 Sep. 1996. *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6045475A (en) * 1996-12-30 2000-04-04 World Industry Co., Ltd. Controller for a changeable pedaling system in a bi-directional pedaling bicycle
US5957802A (en) * 1997-06-09 1999-09-28 World Industry Co., Ltd. Apparatus for changing rotation of pedal shaft for bicycle
US5954614A (en) * 1998-01-20 1999-09-21 World Industry Co., Ltd. Apparatus for changing power direction for bicycle
WO1999046160A1 (en) * 1998-03-11 1999-09-16 Lee Yun Rak Traveling and accelerating system for bicycle
US6419252B1 (en) * 1998-03-11 2002-07-16 Jung-Ii Park Traveling and accelerating system for riding a bicycle forward regardless the rotation direction of the pedals
CN1123706C (zh) * 1999-06-24 2003-10-08 付景满 一种飞轮
KR100421238B1 (ko) * 2002-01-30 2004-03-11 이광섭 일방향기어
WO2008088169A1 (en) * 2007-01-16 2008-07-24 Mbi Co., Ltd. Transmission for motor and controlling device thereof
US20100016121A1 (en) * 2007-01-16 2010-01-21 Tae-Jin Jung Transmission for motor and controlling device thereof
US8449421B2 (en) 2007-01-16 2013-05-28 Mbi Co. Ltd. Transmission for motor and controlling device thereof
CN101542163B (zh) * 2007-01-16 2014-05-14 Mbi有限公司 电机用传动装置及其控制装置
US20100170731A1 (en) * 2009-01-05 2010-07-08 Sram, Llc Drive System for Driving a Vehicle Wheel
US8100208B2 (en) 2009-01-05 2012-01-24 Sram, Llc Drive system for driving a vehicle wheel
CN104883000A (zh) * 2015-05-25 2015-09-02 严振华 电动自行车用可变减速比的轮毂电机
CN104883000B (zh) * 2015-05-25 2017-06-06 严振华 电动自行车用可变减速比的轮毂电机

Also Published As

Publication number Publication date
TW305337U (en) 1997-05-11
NL1001727C2 (nl) 1996-10-22
KR200246082Y1 (ko) 2002-04-22
CN1123751A (zh) 1996-06-05
CA2162656A1 (en) 1996-05-24
NL1001727A1 (nl) 1996-05-23
GB2295427B (en) 1998-06-10
JPH08207871A (ja) 1996-08-13
GB2295427A (en) 1996-05-29
DE29517733U1 (de) 1996-01-04
FR2727080A1 (fr) 1996-05-24
BR7502640U (pt) 1997-02-25
GB9523851D0 (en) 1996-01-24
FR2727080B1 (fr) 1999-04-09
KR960018106U (ko) 1996-06-19

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